Sneak peak at familiar faces in the Shell SuperRigs 2013 calendar, now available with an oil change at participating locations. And: Vid from the 2012 30th anniversary show in Joplin, Mo., highlighting the city's rebuilding efforts.

Peterbilt Tuesday announced that the next-generation of Paccar engines, designed to comply with the EPA's 2013 emissions standards will be available in all of the truck maker's medium and heavy-duty models starting in 2013.

Diesel engines produce nearly 15 times the amount of one of the main ingredients in smog than gasoline-powered engines, says a recent study by the University of Cal-Berkeley.
The study was in part funded by the ...